.call{
    height: 550px;
}
.haha1{
    background-image: url(../img/banner.jpg);
    background-size:cover;
}
.haha2{
    background-image: url(../img/banner2.jpg);
    background-size:cover;
}
.haha3{
    background-image: url(../img/banner3.jpg);
    background-size:cover;
}
@media (max-width: 600px) {
    .call{
        height: 230px;
    }
}


.card .card-text{
    height: 30px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

footer{
    background-color: #eee;
    padding-top: 70px;
    padding-bottom: 70px;
    font-size: 14px;
}